[81]Subject to a few specific exceptions, the laying of indictable criminal charges is not subject to limitation periods (Rourke). (See also R. v. Finta, 1994 CanLII 129 (SCC), [1994] 1 S.C.R. 701.) Limitation periods in criminal law are the province of parliament, subject to judicial scrutiny only for constitutional compliance and the ability of courts to control their own processes to protect accused persons through the doctrine of abuse of process. The invocation of section 7 of the Charterto assist an accused person whose regularly constituted charges involve significant pre-charge delay has been carefully confined to few and unusual circumstances where demonstrated prejudice to his or her fair trial rights or abuse of process is found.